Solved Chemistry MCQS
Oleum is
None of them
Fuming of H2SO4
Castor oil
Oil of vitriol
Ethanol containing some methanol is called
Rectified spirit
Methylated spirit
Power alcohol
Absolute spirit
Pollutant of automobile exhausts that affects nervous system/produces mental diseases is
Nitrogen oxide
Sulphur oxide
Mercury
Lead
Among alkali metal salts, the lithium salts are the poorest conductors of electricity in aqueous solution because of
Higher degree of hydration of Li+ions
Easy diffusion of Li+ions
Lowest charge to radius ratio
Lower ability of Li+ions to polarize water molecules
The percentage of oxygen in NaOH is
10
8
60
40
Portland cement is manufactured by using
Limestone, clay and sand
Limestone, clay and gypsum
Limestone, gypsum and sand
Limestone, gypsum and alumina
All the naturally occurring processes proceed spontaneously in a direction which lead to
Decrease of entropy
Decrease of free energy
Increase of enthalpy
Increase of free energy
Ethyl chloride on treatment with aqueous alkali gives
Ethanal
Ethene
Ethanol
Ethane
In the manufacture of iron from haematite, limestone is added to act as.
Slag
An oxidizing agent
A reducing agent
Flux
Which of these is the most widely used nitrogen fertilizer in Pakistan
Ammonium Sulphate
Ammonium chloride
Urea
Ammonium nitrate
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